HIGH-TORQUE HYDRAULIC MOTOR

摘要

of the disclosure: A hydraulic piston motor capable of delivering a high torque to an output shaft while running at a uniform low speed. The motor has a rotor mounted on the shaft. The rotor has circumferential cams and is surrounded by a housing containing cylinders spaced radially symmetrically around the rotor. The cylinders contain pistons including parts adapted to cooperate with the circumferential surface of the rotor. The rotor has such a profile that the sum of the derivatives of the curve S of the working strokes of all pistons during one revolution is of equal magnitude at every moment.